1242112213442 has 16 divisors (see below), whose sum is σ = 1870469889792. Its totient is φ = 618623295840.

The previous prime is 1242112213439. The next prime is 1242112213451. The reversal of 1242112213442 is 2443122112421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2138198 + ... + 2656334.

It is an arithmetic number, because the mean of its divisors is an integer number (116904368112).

Almost surely, 2^{1242112213442} is an apocalyptic number.

1242112213442 is a deficient number, since it is larger than the sum of its proper divisors (628357676350).

1242112213442 is a wasteful number, since it uses less digits than its factorization.

1242112213442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522833.

The product of its digits is 6144, while the sum is 29.

Adding to 1242112213442 its reverse (2443122112421), we get a palindrome (3685234325863).

The spelling of 1242112213442 in words is "one trillion, two hundred forty-two billion, one hundred twelve million, two hundred thirteen thousand, four hundred forty-two".